Finding the Fourth Proportional to 777,027.36, 1,072,456.80 and 490,354.56
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Solution
The fourth proportional to 777,027.36, 1,072,456.80 and 490,354.56 is: 676,789.66
Step by Step Solution
- Step 1: Write the proportion equation
777,027.36 : 1,072,456.80 = 490,354.56 : x - Step 2: Convert to fraction form
777,027.36/1,072,456.80 = 490,354.56/x - Step 3: Cross multiply
777,027.36x = 1,072,456.80 × 490,354.56 - Step 4: Simplify right side
777,027.36x = 525,884,082,283.01 - Step 5: Solve for x
x = 525,884,082,283.01/777,027.36 - Step 6: Final answer
x = 676,789.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.